/*-
 * ================================================================================
 * eCOMP Portal SDK
 * ================================================================================
 * Copyright (C) 2017 AT&T Intellectual Property
 * ================================================================================
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * ================================================================================
 */
package org.openecomp.portalsdk.core.controller;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.json.JSONObject;
import org.openecomp.portalsdk.core.domain.Menu;
import org.openecomp.portalsdk.core.domain.MenuData;
import org.openecomp.portalsdk.core.service.FnMenuService;
import org.openecomp.portalsdk.core.util.SystemProperties;
import org.openecomp.portalsdk.core.web.support.JsonMessage;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.servlet.ModelAndView;

import com.fasterxml.jackson.core.JsonGenerationException;
import com.fasterxml.jackson.databind.DeserializationFeature;
import com.fasterxml.jackson.databind.JsonMappingException;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;

/**
 * Description: this java class is a controller for Admin to add/edit/delete menu items from FN_MENU
 */

@Controller
@RequestMapping("/")
public class FnMenuController extends RestrictedBaseController {
	@Autowired
	FnMenuService service;
	
	String viewName;
	
	@RequestMapping(value = {"/admin_fn_menu/get_parent_list" }, method = RequestMethod.GET)
	public void getParentList(HttpServletRequest request,HttpServletResponse response) throws Exception {
		ObjectMapper mapper = new ObjectMapper();
		try{
			
			response.getWriter().write(mapper.writeValueAsString(service.getParentList()));		
			
		} catch (Exception e) {
			response.setCharacterEncoding("UTF-8");
			request.setCharacterEncoding("UTF-8");
			PrintWriter out = response.getWriter();
			out.write(e.getMessage());
			
		}
		
	}	

	@RequestMapping(value = {"/admin_fn_menu/get_function_cd_list" }, method = RequestMethod.GET)
	public void getFunctionCDList(HttpServletRequest request,HttpServletResponse response) throws Exception {
		ObjectMapper mapper = new ObjectMapper();
		try{
			
			response.getWriter().write(mapper.writeValueAsString(service.getFunctionCDList()));	
			
		} catch (Exception e) {
			response.setCharacterEncoding("UTF-8");
			request.setCharacterEncoding("UTF-8");
			PrintWriter out = response.getWriter();
			out.write(e.getMessage());
			
		}
		
	}
	
	@RequestMapping(value = {"/admin_fn_menu" }, method = RequestMethod.GET)
	public void getFnMenuList(HttpServletRequest request,HttpServletResponse response) {
		Map<String, Object> model = new HashMap<String, Object>();
		ObjectMapper mapper = new ObjectMapper();	
		List<MenuData> temp =null;
		List<List<MenuData>> childItemList = new ArrayList<List<MenuData>>();
		List<MenuData> parentList = new ArrayList<>();
	
		try {
			temp = service.getFnMenuItems();
			for(MenuData menu: temp){
				MenuData parentData = new MenuData();
				parentData.setId(menu.getId());
				parentData.setLabel(menu.getLabel());
				if(menu.getParentMenu()!=null){
					parentData.setParentId(menu.getParentMenu().getId());
				}
				parentData.setAction(menu.getAction());
				parentData.setFunctionCd(menu.getFunctionCd());
				parentData.setImageSrc(menu.getImageSrc());
				parentData.setSortOrder(menu.getSortOrder());
				parentData.setActive(menu.isActive());
				parentData.setServlet(menu.getServlet());
				parentData.setQueryString(menu.getQueryString());
				parentData.setExternalUrl(menu.getExternalUrl());
				parentData.setTarget(menu.getTarget());
				parentData.setMenuSetCode(menu.getMenuSetCode());
				parentData.setSeparator(menu.isSeparator());
				parentData.setImageSrc(menu.getImageSrc());
				parentList.add(parentData);
				List<MenuData> tempList = new ArrayList<MenuData>();
				childItemList.add(tempList);
			}
			model.put("fnMenuItems", parentList);

			JsonMessage msg = new JsonMessage(mapper.writeValueAsString(model));
			JSONObject j = new JSONObject(msg);
			response.getWriter().write(j.toString());	
		} catch (JsonGenerationException e) {
			e.printStackTrace();
		} catch (JsonMappingException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
		
	}

	
	@RequestMapping(value = {"/admin_fn_menu/updateFnMenu" }, method = RequestMethod.POST)
	public ModelAndView updateFnMenu(HttpServletRequest request, 
			HttpServletResponse response) throws Exception {

		try {						
				ObjectMapper mapper = new ObjectMapper();
				mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);				
				JsonNode root = mapper.readTree(request.getReader());
				Menu fnMenuItem = mapper.readValue(root.get("availableFnMenuItem").toString(), Menu.class);	
				
				service.saveFnMenu(fnMenuItem);
				request.getSession().removeAttribute(SystemProperties.getProperty(SystemProperties.APPLICATION_MENU_ATTRIBUTE_NAME));
				request.getSession().removeAttribute(SystemProperties.LEFT_MENU_CHILDREND);
				request.getSession().removeAttribute(SystemProperties.LEFT_MENU_PARENT);
			
				response.setCharacterEncoding("UTF-8");
				response.setContentType("application / json");
				request.setCharacterEncoding("UTF-8");

				PrintWriter out = response.getWriter();
				String responseString = mapper.writeValueAsString(service.getMenuItem(fnMenuItem.getId()));
				
				out.write(responseString);
				
				return null;				
			
		} catch (Exception e) {
			response.setCharacterEncoding("UTF-8");
			request.setCharacterEncoding("UTF-8");
			PrintWriter out = response.getWriter();
			out.write(e.getMessage());
			
		}
	return null;

	}	

	@RequestMapping(value = {"/admin_fn_menu/removeMenuItem" }, method = RequestMethod.POST)
	public ModelAndView removeFnMenu(HttpServletRequest request, 
			HttpServletResponse response) throws Exception {

	try {		
			ObjectMapper mapper = new ObjectMapper();
			mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);				
			JsonNode root = mapper.readTree(request.getReader());
			Menu fnMenuItem = mapper.readValue(root.get("fnMenuItem").toString(), Menu.class);	
			Menu fnMenuItemRow = service.getMenuItemRow(fnMenuItem.getId());

			service.removeMenuItem(fnMenuItemRow);
			
			response.setCharacterEncoding("UTF-8");
			response.setContentType("application / json");
			request.setCharacterEncoding("UTF-8");
			PrintWriter out = response.getWriter();
			String responseString = mapper.writeValueAsString(service.getMenuItem(fnMenuItem.getId()));
			out.write(responseString);
			
			return null;			
			
		} catch (Exception e) {
			response.setCharacterEncoding("UTF-8");
			request.setCharacterEncoding("UTF-8");
			PrintWriter out = response.getWriter();
			out.write(e.getMessage());
			
			
		}
	return null;

	}	
	
	public String getViewName() {
		return viewName;
	}
	public void setViewName(String viewName) {
		this.viewName = viewName;
	}
	
	
}